Ключевые слова: architecture, blue sky, building, building activity, construction, construction machinery, construction site, construction vehicle, copy space, day, development, earth mover, excavation machine, excavator, front end loader, green, home addition, house, housing development, housing project, hydraulic platform, industry, large, loader, low angle view, metal, nobody, one, outdoors, pipe, selective focus, side view, sky, steel, tree, yellow,